Magic-Brain Calculator Smithsonian Institution

Unopened package Includes instructions, Calculator and Stylus are both metal

Vintage 1960's Magic Brain Pocket Calculator W/Stylus, Made in

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Old Magic Brain Pre Electronic Mechanical Calculator - TPNC

National Museum of American History

Don't put too much stock into it yet, but eventually this will be

The Mind-Bending Math Behind Spot It!, the Beloved Family Card

Magic Brain Calculator, c. 1950-1969 - Machine, Calculating

Pocket Calculator Isn't A Brain Or Magic

Scott Flansburg, The Human Calculator on Math Hacks Anyone Can